JDK 17 jdk.jfr.jmod is the JMOD file for JDK 17 JFR module.

JDK 17 JFR module compiled class files are stored in \fyicenter\jdk-17.0.5\jmods\jdk.jfr.jmod.

JDK 17 JFR module compiled class files are also linked and stored in the \fyicenter\jdk-17.0.5\lib\modules JImage file.

JDK 17 JFR module source code files are stored in \fyicenter\jdk-17.0.5\lib\src.zip\jdk.jfr.

You can click and view the content of each source code file in the list below.

⏎ jdk/jfr/internal/consumer/Dispatcher.java

/*
 * Copyright (c) 2019, 2020, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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 */

package jdk.jfr.internal.consumer;

import java.time.Instant;
import java.util.ArrayList;
import java.util.List;
import java.util.function.Consumer;

import jdk.jfr.EventType;
import jdk.jfr.consumer.MetadataEvent;
import jdk.jfr.consumer.RecordedEvent;
import jdk.jfr.internal.LongMap;
import jdk.jfr.internal.consumer.ChunkParser.ParserConfiguration;

final class Dispatcher {

    static final class EventDispatcher {
        private static final EventDispatcher[] NO_DISPATCHERS = new EventDispatcher[0];

        private final String eventName;
        private final Consumer<RecordedEvent> action;

        public EventDispatcher(String eventName, Consumer<RecordedEvent> action) {
            this.eventName = eventName;
            this.action = action;
        }

        private void offer(RecordedEvent event) {
            action.accept(event);
        }

        private boolean accepts(EventType eventType) {
            return (eventName == null || eventType.getName().equals(eventName));
        }

        public Consumer<RecordedEvent> getAction() {
            return action;
        }
    }

    private final Consumer<Throwable>[] errorActions;
    private final Consumer<MetadataEvent>[] metadataActions;
    private final Runnable[] flushActions;
    private final Runnable[] closeActions;
    private final EventDispatcher[] dispatchers;
    private final LongMap<EventDispatcher[]> dispatcherLookup = new LongMap<>();
    final ParserConfiguration parserConfiguration;
    final Instant startTime;
    final Instant endTime;
    final long startNanos;
    final long endNanos;

    // Cache
    private EventType cacheEventType;
    private EventDispatcher[] cacheDispatchers;

    @SuppressWarnings({"rawtypes", "unchecked"})
    public Dispatcher(StreamConfiguration c) {
        this.flushActions = c.flushActions.toArray(new Runnable[0]);
        this.closeActions = c.closeActions.toArray(new Runnable[0]);
        this.errorActions = c.errorActions.toArray(new Consumer[0]);
        this.metadataActions = c.metadataActions.toArray(new Consumer[0]);
        this.dispatchers = c.eventActions.toArray(new EventDispatcher[0]);
        this.parserConfiguration = new ParserConfiguration(0, Long.MAX_VALUE, c.reuse, c.ordered, buildFilter(dispatchers));
        this.startTime = c.startTime;
        this.endTime = c.endTime;
        this.startNanos = c.startNanos;
        this.endNanos = c.endNanos;
        EventDispatcher[] ed = new EventDispatcher[1];
        ed[0] = new EventDispatcher(null, e -> {
                runFlushActions();
        });
        dispatcherLookup.put(1L, ed);
    }

    public void runMetadataActions(MetadataEvent event) {
        Consumer<MetadataEvent>[] metadataActions = this.metadataActions;
        for (int i = 0; i < metadataActions.length; i++) {
            try {
                metadataActions[i].accept(event);
            } catch (Exception e) {
                handleError(e);
            }
        }
    }

    public void runFlushActions() {
         Runnable[] flushActions = this.flushActions;
         for (int i = 0; i < flushActions.length; i++) {
             try {
                 flushActions[i].run();
             } catch (Exception e) {
                 handleError(e);
             }
         }
    }

    public void runCloseActions() {
        Runnable[] closeActions = this.closeActions;
        for (int i = 0; i < closeActions.length; i++) {
            try {
                closeActions[i].run();
            } catch (Exception e) {
                handleError(e);
            }
        }
    }

    private static ParserFilter buildFilter(EventDispatcher[] dispatchers) {
        ParserFilter ef = new ParserFilter();
        for (EventDispatcher ed : dispatchers) {
            String name = ed.eventName;
            if (name == null) {
                return ParserFilter.ACCEPT_ALL;
            }
            ef.setThreshold(name, 0);
        }
        return ef;
    }

    void dispatch(RecordedEvent event) {
        EventType type = event.getEventType();
        EventDispatcher[] dispatchers = null;
        if (type == cacheEventType) {
            dispatchers = cacheDispatchers;
        } else {
            dispatchers = dispatcherLookup.get(type.getId());
            if (dispatchers == null) {
                List<EventDispatcher> list = new ArrayList<>();
                for (EventDispatcher e : this.dispatchers) {
                    if (e.accepts(type)) {
                        list.add(e);
                    }
                }
                dispatchers = list.isEmpty() ? EventDispatcher.NO_DISPATCHERS : list.toArray(new EventDispatcher[0]);
                dispatcherLookup.put(type.getId(), dispatchers);
            }
            cacheDispatchers = dispatchers;
        }
        // Expected behavior if exception occurs in onEvent:
        //
        // Synchronous:
        //  - User has added onError action:
        //     Catch exception, call onError and continue with next event
        //     Let Errors propagate to caller of EventStream::start
        //  - Default action
        //     Catch exception, e.printStackTrace() and continue with next event
        //     Let Errors propagate to caller of EventStream::start
        //
        // Asynchronous
        //  - User has added onError action
        //     Catch exception, call onError and continue with next event
        //     Let Errors propagate, shutdown thread and stream
        //  - Default action
        //    Catch exception, e.printStackTrace() and continue with next event
        //    Let Errors propagate and shutdown thread and stream
        //
        for (int i = 0; i < dispatchers.length; i++) {
            try {
                dispatchers[i].offer(event);
            } catch (Exception e) {
                handleError(e);
            }
        }
    }

    private void handleError(Throwable e) {
        Consumer<?>[] consumers = this.errorActions;
        if (consumers.length == 0) {
            defaultErrorHandler(e);
            return;
        }
        for (int i = 0; i < consumers.length; i++) {
            @SuppressWarnings("unchecked")
            Consumer<Throwable> consumer = (Consumer<Throwable>) consumers[i];
            consumer.accept(e);
        }
    }

    private void defaultErrorHandler(Throwable e) {
        e.printStackTrace();
    }

    public boolean hasMetadataHandler() {
        return metadataActions.length > 0;
    }
}

⏎ jdk/jfr/internal/consumer/Dispatcher.java

Or download all of them as a single archive file:

File name: jdk.jfr-17.0.5-src.zip
File size: 363343 bytes
Release date: 2022-09-13
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